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C-Axis Oriented Lithium Niobate Films on (001) Magnesium Oxide by Pulsed Laser Deposition

Published online by Cambridge University Press:  15 February 2011

J. L. Lacey  and
D. G. Schlom
J. L. Lacey
Affiliation:
Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802–5005, [email protected]
D. G. Schlom
Affiliation:
Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802–5005, [email protected]
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Abstract

For the first time, epitaxial c-axis oriented lithium niobate (LiNbO3) films were grown on MgO (001) substrates. This orientation is relevant to the monolithic integration of LiNbO3 with GaAs for waveguiding, frequency doubling, and other opto-electronic applications. The epitaxial orientation relationship is (001 ) LiNbO3 parallel to (001) MgO and [100] LiNbO3 parallel to [110] MgO. Four equivalent in-plane orientations were observed, such that the lithium or niobium atoms along the [100] axis of LiNbO3 are bonded to the oxygen atoms on diagonal comers of the MgO unit cell. These epitaxial films were prepared by off-axis pulsed laser deposition at substrate temperatures of 775–800 °C in a 15–50 mTorr mixture of 5% O3 in O2.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 401: Symposium G – Epitaxial Oxide Thin Films II , 1995 , 393
Copyright
Copyright © Materials Research Society 1996

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